Campbell Scientific CS10-L and CS15-L Current Transformers - Manual (Page 11)

CS10-L and CS15-L Current Transformers
25 Samples of Amperage on CR200(X) Datalogger (60 Hz)
or 30 Samples of Amperage on CR200(X) Datalogger (50 Hz)
-80
-60
-40
-20
0
20
40
60
1 3 5 7 9 11 13 15 17 19 21 23 25
Instanteneous Amps
mV
80
CS15-L waveform
FIGURE 3. Graph of a CS15 waveform
CR200(X) Program for 60 Hz
'CR200(X) Series Datalogger
' Program name: CS15-LManual.cr2
'date: 4 Mar 2009
'program author: Brad Maxfield
Const Samples = 25
' 25 samples for 2 waves of 60 Hz.
'Const Samples = 30 ' 30 samples for 2 waves of 50 Hz.
Public Crnt_A
Public mV(Samples)
Dim Counter
'Define Data Tables
DataTable (Test,1,-1)
DataInterval
(0,1,min)
Average (1,Crnt_A,False)
Maximum (1,Crnt_A,False,0)
EndTable
'Main Program
BeginProg
Scan
(1,Sec)
ExciteV (Ex1,mV2500)
For Counter = 1 To Samples
VoltSe (mV(Counter),1,1,1.0,-1250)
Next
ExciteV
(Ex1,mV0)
RMSSpa (Crnt_A,(Samples-0),mV(1))
Crnt_A=Crnt_A*0.2 ' Multiplier for sensor
If Crnt_A<0.15 Then ' Eliminate noise below 0.15 amps.
Crnt_A = 0
EndIf
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